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Date: Thu, 12 Oct 2017 15:13:51 -0700 From: Andi Kleen <ak@...ux.intel.com> To: Borislav Petkov <bp@...en8.de> Cc: "Luck, Tony" <tony.luck@...el.com>, Jeremy Cline <jcline@...hat.com>, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org, linux-edac@...r.kernel.org, linux-kernel@...r.kernel.org, Laura Abbott <labbott@...hat.com> Subject: Re: x86/mce: suspicious RCU usage in 4.13.4 On Thu, Oct 12, 2017 at 11:02:52AM +0200, Borislav Petkov wrote: > On Wed, Oct 11, 2017 at 04:11:37PM -0700, Andi Kleen wrote: > > Sorry I take back what I wrote earlier. This RCU is actually still needed, > > otherwise the reader could see partially written entries. > > Why? All the readers and writers take the mutex now. Ok fair enough. -Andi
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